locked OSX Big Sur Compile from source #macOS


When using the latest Big Sur install with xCode 13 the command 
sudo port install autoconf automake \
   libtool pkgconfig texinfo gcc5 asciidoc \
   fftw-3-single +gcc5 libusb-devel
fails when trying to install libgcc7
it looks like this is an old version of gcc that may have an issue on Big Sur now, am I able to use gcc10 to build
I know that other developers are building for the Apple M1 processor what tool chains are you using please.

Any help would be appreciated.

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